I don't see what the big deal is about the kid wanting to get some before he goes. If you aren't a virgin now, you don't really have room to blame, do you?
Given that sentiment, which I assume is a sincere one on your part, I don't think there's much, if any, common ground between us on this particular issue.
My guess is that it would be a waste of time for either of us to try to persuade the other.